The Lumenier QAV250 Carbon Fiber main unibody frame plate is an upgrade replacement for the QAV250 Mini FPV Quadcopter Carbon Fiber Edition. The thicker 4mm Carbon Fiber QAV250 "Unibody" frame plate gives greater impact protection, this is a must have upgrade for those looking for ultimate strength for their Mini FPV Racing QAV250. The QAV250 Carbon Fiber main unibody frame plate is a good choice to combin with the arm extensions or larger motors which will put more force on the arms on an impact. High speed FPV racers will benefit from this upgrade as well allowing the airframe to survive more extreme crashes compared to the QAV250 Carbon Fiber Main Unibody Frame Plate 3mm.